Gas-engine



- (No Model.) 2 Sheets-Sheet 1.

H. J. HARTIG.

GAS ENGINE. No. 415,197. Patented Nov. 19, 1889.

2 Sheets-Sheet 2.

(No Model.)

H. J. HARTIG. GAS ENGINE No. 415,197. Patented Nov; 19, 1889.

valve in the valve-chamber.

UNITED STATES PATENT OFFICE.

HENRY J. I'IARTIG, OF BROOKLYN, NEIV YORK.

G AS E N G I N E SPECIFICATION forming part of Letters Patent No. 415,197, dated November 19, 1889.

Application filed July 25, 1889. Serial No.3l8,658. (N0 model.)

To aZZ whom it may concern.-

Be it known that I, HENRY J. HARTIG, of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Gas-Engines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

My invention relates to engines wherein the explosive force of gas, or gas and air, is employed as the motive power, and which are commonly known as gas-engines or gasmotors.

The object of my invention is to produce an engine of the class named which shall be of few and simple parts, powerful, reliable, and effective, compact and convenient in arrangement, economical of fuel, of which the Various working parts are easily accessible and removable, and which may be operated at high or low speed with equal certainty and efficiency.

To accomplish all of this and to secure other and further advantages in the matters of construction, operation, and use my improvements involve certain new and useful arrangements or combinations of parts, peculiarities of construction, and principles of operation, all of which will be herein first fully described, and then pointed out in the claims.

In the accompanying drawings, forming part of this specification, Figure 1 is a partial elevation and section of my improved engine upon a plane at right angles to the main shaft. Fig. 2 is a front view, partly in section and partly in elevation. Fig. 3 is partial plan view of the base corresponding with Fig. 2 and showing the general location of the cylinders and valve-chamber. Fig. 4 is a horizontal sectional view of the valve-chamber detached. Fig. 5 is a sectional elevation at right angles to the main shaft, showing a governor and connections with the check- Fig. 6 is a side elevation showing the means and connections for operating the ignition-valve. Fig. 7 is a sectional view enlarged beyond previous figures, showing the construction of the ignition-valve; and Fig. 8 is a top or plan view corresponding with Fig. 7. Fig. 9 is an elevation of the plunger detached from the casing shown in Fig. 8.

In all these figures like letters of reference wherever they occur indicate corresponding parts.

Ais the main shaft of the engine, journaled in suitable standards 13 13, mounted upon a base or bed O. The shaft A carries a flywheel D, which may also be used as a beltwheel, and is supplied at one portion with a disk E, driven by a connecting-rod F, leading from the main piston G, and at another point with a disk H, which drives the gaspump piston I through rod K. L is the power-cylinder, within which the explosive force of the gas or fuel is utilized to drive the main piston G. M is the pumpcylinder, into which the fuel is drawn and from which it is forced into the explosionchamber. These two cylinders are arranged in line upon the bed-plate and firmly secured thereto. \Vhile the engine shown is of the variety known as compression-engines, from the fact that the fuel is compressed before being exploded, it should be distinctly understood that my improvements are not confined to compression-engines, but may be applied in others as well; and while the general arrangements are chiefly applicable in upright engines the peculiar ignition-valve and the valve-chest are in no way to be confined to use in either explosive or upright engines, but may be used in any style.

N is a chamber extending on one side a sufficient distance to establish communication between a port a, leading into the pumpcylinder, and a port 17, leading into the main cylinder L, and this chamber I call a valvechalnber, because the valves all operate in or in connection with it. \Vithin chamberN is an air and gas valve 0, which as pumppiston I is retracted .rises and admits gas from any source through opening (Z and connecting-channels, and at the same time admits a quantity of air from the exterior through separate channels cc. This mixture constitutes the fuel which is to beexploded. It enters the pump-cylinder and the valvechamber. When piston I reaches its highest point, valve 0 closes, and upon descent of piston I the fuel is forced past the checkvalve f and into the chamber in which it is to be exploded, of which chamber the space beneath the main piston G is a port. The explosion is effected through an ignitionvalve applied upon the valve-chest. (Shown in position at Fig. 4 and in detail in Figs. 7 and 9.)

0 represents the valve casing, within which is a plunger P. This casing is removably applied upon the valve-chest and communicates with the interior thereof through an opening g. Gas from valve-chamber N enters at 9, passes around plunger P, through channel 9, thence through an opening governed by a needle-valve g thenceinto a recess g formed in the casing O. The plunger is recessed at top and fitted with a removable plug Q, (screw-threaded,) having a conical projection or portion Q, above which projection the plug Q is slightly tapered or reduced in diameter to afford a narrow recess h between the plug and the shell of the plunger, increasing in area from top to bottom, as plainly shown. In the region of channel g the exterior of the plunger is recessed, as at 'i, and perforated, as at c". When the plunger is in proper position, a small quantity of the gas or fuel escapes from channel g through perforations c", through recess h, and out at opening or mouth k, where it is ignited by a small flame maintained at a jet-orifice Z, suitably located for the purpose. The movements of the plunger are so regulated or timed that when ignition takes place the plunger will uncover mouth 9 and close mouth 70, the ignition ex tending to the contents of the explosionchamber. The chamber h, being of tapered form, is not liable to become clogged, and affords a free and abundant access of gas to the region of the conical plug Q, from whence it can easily escape to be ignited. As the plunger descends the channel g and passages communicating therewith have abundant time to become charged with live gas ready for the succeeding explosion, and the ignition is thus enabled to take place with certainty no matter at what speed the engine may be operated. The plunger may of course be made cylindrical or of any other figure, and, while it is preferred to move it vertically, it may be moved in horizontal or other direction. It may be easily removed for cleaning, if necessary. It is moved by any suitable connection with the main shaft.

P is a rod connected with the plunger and operated by a lever P one end of which engages with a cam-slot in disk E. Any other equivalent means may be substituted for these less pressure than ordinarily, will produce a lighter effect upon the piston and allow the engine to gradually resume its proper speed.

To move the check-valve I connect it with a suitable governor, which may be of any preferred construction, but arranged to operate at the time desired. In the form shown weighted arms, as R R are hinged so as to swing outward from the center more and more as the speed increases. They are connected with a sliding collar carrying a cam m, as by jointed rods n. A lever 0, suitably located and hinged, is depressed by cam m when the latter is carried along to the proper point, and by connecting rods 19 p raises the check-valve at times and in a manner which will be readily understood.

lVithin the valve-chamber the check-valve is screened by a wall or partition q, extending out toward the ignition-valve, the purpose of which is to insure a thorough ventilation of that portion of the explosion-chamber-that is, so that the incoming gas or fuel shall drive out all the exploded material and prevent the accumulation of dead material in the region of the port leading to the ignitionvalve.

The improved engine may be used for any purpose.

At S is a water or other pump conveniently disposed on the base and driven from the main shaft by gears T T and suitable connections. Any other machine maybe put in the place of the pump.

V V are chambers through which a supply of water may be employed to preventoverheating.

W is the exhaust-channel.

The valves are all accessible from the top, the parts are all simple and easy to make and mount, not liable to get out of order, and the engine has been found to admirably answer the purpose or object of the invention previously set forth.

Having now fully described my invention, what I claim as new herein, and desire to secure by Letters Patent, is-

1. In a gas-engine, the combination, with the power-cylinder and pump-cylinder located and arranged substantially as shown, of a valve-chamber extending from one cylinder to the other and establishing commu nication between the two, said chamber sustaining a gas-valve covering the separate inlets for gas and air, a check-valve connected with and operated by a governor, and an ignition valve, substantially as shown and described.

2. In a gas-engine, the combination, with the valve-chamber establishing communication between the power-cylinder and gaspump, of a check-valve, a partition g, arranged to direct the flow of gas in the region of the check-valve, a governor, and means for connecting the check valve with the governor, substantially as and for the purposes set forth.

3. In combination with the check-valve located in the valve-chamber, a partition q, arranged to direct the flow of gas, substantially in the manner and for the purposes set forth.

4:. The removable plug, combined with the plunger of an ignition-valve for gas-engines, said plug being gradually reduced in diameter, as explained, and forming with the shell of the plunger a gas-channel of graduallyincreasing area, substantially as shown and described.

5. The removable plug Q, combined with perforated plunger P and having a conical projection Q, located and arranged substantially as shown and described.

HENRY J. HARTIG.

Witnesses:

W. J. MORGAN, WORTH Oseoon. 

